Mitsubishi Outlander GS45X. Manual - part 588

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-175

STEP 6. Measure the sensor supply voltage at ECM 
connector B-11 by using power plant ECU check harness 
special tool MB992110.
(1) Disconnect all ECM connectors. Connect the power plant 

ECU check harness special tool MB992110 between the 
separated connectors.

(2) Disconnect the intake air temperature sensor connector 

A-07.

(3) Turn the ignition switch to the "ON" position.

(4) Measure the voltage between terminal No. 89 and ground.

• Voltage should be between 4.5 and 4.9 volts.

(5) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage between 4.5 and 4.9 volts?

YES : Repair harness wire between intake air temperature 

sensor connector A-07 (terminal No. 1) and ECM 
connector B-11 (terminal No. 89) because of open 
circuit. Then go to Step 10. 

NO :  Replace the ECM. When the ECM is replaced, 

register the ID code. Refer to GROUP 42B, Diagnosis 
− ID Code Registration Judgment Table <Vehicles 

with KOS> 

P.42B-15

 or GROUP 42C, Diagnosis 

− ID 

Codes Registration Judgment Table <Vehicles with 
WCM> 

P.42C-10

. Then go to Step 10.

STEP 7. Check the continuity at intake air temperature 
sensor harness side connector A-07.
(1) Disconnect the connector A-07 and measure at the harness 

side.

(2) Check for the continuity between terminal No. 4 and 

ground.

• Continuity (2 ohms or less)

Q: Does continuity exist?

YES : Replace the ECM. When the ECM is replaced, 

register the ID code. Refer to GROUP 42B, Diagnosis 
− ID Code Registration Judgment Table <Vehicles 

with KOS> 

P.42B-15

 or GROUP 42C, Diagnosis 

− ID 

Codes Registration Judgment Table <Vehicles with 
WCM> 

P.42C-10

. Then go to Step 10.

NO :  Go to Step 8.

AK604171

ECM

AB

Body side harness 

MB992110

82 81 80 79 78 77 76 75 74 73 72 71

94 93 92 91 90 89 88 87 86 85 84 83

99 98 97 96 95

100

101

102

103

104

105

106

112

113

114

109 108

107

110

111

115

116

117

118

AK604179 AB

Power plant ECU
check harness
connector

2

1

3

4

AK203028

A-07 harness 
connector: 
component side

AH

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-176

STEP 8. Check harness connector B-11 at ECM for 
damage.
Q: Is the harness connector in good condition?

YES : Go to Step 9.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 10.

STEP 9. Check for open circuit between intake air 
temperature sensor connector A-07 (terminal No. 4) and 
ECM connector B-11 (terminal No. 88).
Q: Is the harness wire in good condition?

YES : Replace the ECM. When the ECM is replaced, 

register the ID code. Refer to GROUP 42B, Diagnosis 
− ID Code Registration Judgment Table <Vehicles 

with KOS> 

P.42B-15

 or GROUP 42C, Diagnosis 

− ID 

Codes Registration Judgment Table <Vehicles with 
WCM> 

P.42C-10

. Then go to Step 10.

NO :  Repair it. Then go to Step 10.

STEP 10. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to 

Diagnostic Function 

− OBD-II Drive Cycle − Pattern 23 

P.13A-11

.

(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0113 set?

YES : Retry the troubleshooting.
NO :  The inspection is complete.

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-177

DTC P0116: Engine Coolant Temperature Circuit Range/Performance Problem

.

AK603948

1 2

1 2

1

2

3 4 5 6 7 8 9 10 11 12 13 14 15 16

17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48

49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64

YELLO

W

-GREEN

YELLO

W

-BLUE

ENGINE
CONTROL
MODULE

ENGINE COOLANT
TEMPERATURE SENSOR

B-09

(MU802406)

B-10

ENGINE COOLANT TEMPERATURE SENSOR CIRCUIT

2

27

1

26

AC

5V

AK704101

Water hose

AB

Connector: B-09

B-09 (B)

AK704090AB

Connector: B-10

B-10 (GR)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-178

CIRCUIT OPERATION

• 5-volt voltage is applied to the engine coolant 

temperature sensor output terminal (terminal No. 
1) from the ECM (terminal No. 26) via the resistor 
in the ECM. The ground terminal (terminal No. 2) 
is grounded with ECM (terminal No. 27).

• The engine coolant temperature sensor is a neg-

ative temperature coefficient type of resistor. It 
has the characteristic that when the engine cool-
ant temperature rises the resistance decreases.

• The engine coolant temperature sensor output 

voltage increases when the resistance increases 
and decreases when the resistance decreases.

.

TECHNICAL DESCRIPTION

• The engine coolant temperature sensor converts 

the engine coolant temperature to a voltage and 
outputs it.

• The ECM checks whether this voltage is within a 

specified range.

.

DESCRIPTIONS OF MONITOR METHODS

Engine coolant temperature sensor output voltage 

does not change for specified period when 
engine coolant temperature sensor output volt-
age at engine start is over 7

°C (45°F).

.

MONITOR EXECUTION

Once per driving cycle

.

MONITOR EXECUTION CONDITIONS 
(Other monitor and Sensor)

Other Monitor (There is no temporary DTC stored 

in memory for the item monitored below)

• Not applicable

Sensor (The sensor below is determined to be 

normal)

• Mass airflow sensor

• Intake air temperature sensor

.